Datasheet > iW337-00

iW337-00

更新时间： 2024-02-11 18:50:59

品牌	Logo	应用领域
DIALOG		/
页数	文件大小	规格书
5页	319K
描述
Signal Interface Controller for Analog

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iW337-00 数据手册

iW337

Signal Interface Controller for Analog (0–10V),

PWM, and Resistor Dimming

Company Conﬁdential

1 Description

The iW337 is a PWM signal generator that works with three different types of dimming inputs, 0-10V PWM dimming,

0-10V linear dimming or simple dimming using a single resistor to ground from the DIM pin. The iW337 converts

either of these three signals into a 1%-100% PWM duty cycle that can then be used to provide a dimming signal to a

primary-side LED driver such as the iW3631, removing the need for transformers or other driver circuitry.

The output PWM frequency can be programmed from 100Hz to 50kHz through a single capacitor to ground. The input

to the iW337 integrates the necessary current source to interface with both active and passive 0-10V dimmers without

additional circuitry, while the output can drive an optocoupler to provide isolated dimming control from the secondary

to the primary.

2 Features

● 15V to 60V operating voltage

● 3-in-1 dimmer interface

● 1% to 100% PWM output

1% PWM duty cycle tolerance

0-10V linear dimming

0-10V PWM dimming

Single resistor dimming

Selectable frequency range via external capacitor

● Low power shutdown mode

● Integrated current source for driving 0-10V dimmer

● Integrated optocoupler driver for isolated applications

● SOIC-8 package

3 Applications

● 0-10V LED dimming application

● 3-in-1 LED driver interface chip (0–10V linear,

0-10V PWM and R dimming) dimming LED driver

application

V_OUT

3-in-1

Dimming

Control

AC Input

iW3631

LꢁD Controller

0-10V PWM

RTN

iW337

Dimming

10V

V_CC

V_IN

0-10V Analog

DRV

DIM

FLT

ꢀND

Resistive

Figure 3.1 : iW337 Typical Application Circuit

Product Summary

Rev. 0.3 Preliminary

9-February-2017

www.dialog-semiconductor.com

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